Retractable knife spear

Abstract

A retractable compact knife spear is provided. The knife spear may include a knife blade, as opposed to standard barbs and may be compacted to strap to a diver's leg. The retractable knife spear may include other features, such as sound signaling devices and may be used as a pointer when leading dive teams. The retractable knife spear is useful for eradication of invasive fish species, such as the lion fish in the Caribbean and along the U.S. east coast.

1 . A dive tool, comprising:
 a body having a coupling and a first configuration in a first state and a second configuration in a second state, the coupling being configured to transform the body between the first configuration and the second configuration;   a selector operatively disposed on the body; and   a plurality of tools disposed in the body and selectable by the selector, at least one of the tools configured to spear fish.   
     
     
         2 . The dive tool as in  claim 1 , wherein the coupling is one of a telescoping arrangement and a folding arrangement. 
     
     
         3 . The dive tool as in  claim 1 , wherein the selector is a push button. 
     
     
         4 . The dive tool as in  claim 1 , wherein the selector is a sliding mechanism. 
     
     
         5 . The dive tool as in  claim 1 , wherein the first configuration is smaller than the second configuration. 
     
     
         6 . The dive tool as in  claim 1 , further comprising a noise maker. 
     
     
         7 . The dive tool as in  claim 1 , further comprising a reflective element. 
     
     
         8 . A dive tool, comprising:
 a body having a coupling and a first configuration in a first state and a second configuration in a second state, the coupling being configured to transform the body between the first configuration and the second configuration;   means for changing the body between the first configuration and the second configuration; and   means for spearing fish.   
     
     
         9 . The dive tool as in  claim 8 , wherein the means for changing the body is a telescope drive. 
     
     
         10 . The dive tool as in  claim 8 , wherein the means for changing the body is a pawl and a rachet, 
     
     
         11 . The dive tool as in  claim 8 , wherein the means for spearing fish is one of a knife, a barb and a projectile.